Your specialist for parallel keys …
Give us a call. We will be pleased to advise you.
fon: +49 (0)2391 91796–0
fax: +49 (0)2391 91796–30
Flat Keys
![](https://www.crummenerl-gmbh.de/wp-content/uploads/2019/11/Standardprodukte_Flachkeile.jpg)
Flat Keys
- made to DIN 6883
- available from stock
- available in all materials with/without heat treatment
- custom dimensions possible
Flat Keys
![](https://www.crummenerl-gmbh.de/wp-content/uploads/2020/06/Crummenerl_Flachkeile.jpg)
Flat Keys
- made to DIN 6883
- available from stock
- available in all materials with/without heat treatment
- custom dimensions possible
MORE FACTS ON OUR FLAT KEYS
Width | w | 8 — 50 mm |
Height | h | 4 — 18 mm |
Length | l | 20 — 400 mm |
Customer dimensions available on agreement.
![](https://www.crummenerl-gmbh.de/wp-content/uploads/2020/06/Crummenerl_f-keilverbindungen1-engl.png)
The advantages of this type of connection are the more uniform distribution of forces over the entire area, the reduced wear and tear as several lateral surfaces are simultaneously load-bearing, and the transmission of higher and variable torques.
Disadvantages: considerably more expensive, more marked weakening of shaft and hub, and high notch effect.
There are different types of wedge, which differ in shape and profile (see picture below). The different types of wedge are set by DIN 6881 (saddle keys), DIN6883 (flat keys), DIN 6886, DIN 6884 (flat gib keys), DIN 6889 (gib-head saddle keys).
Flat keys (DIN 6883 and 6884) have only very low form-locking but are characterised by a significantly lower notch effect than slot wedges.
Saddle keys (DIN 6881 and 6889) are rounded on the lower surface so that they fit directly on the shaft diameter (transmission of force therefore by friction locking).
Tangential keys (DIN 268 and 271) are suitable for high and variable torques. They are also used for split hubs (e.g. for flywheels). In this case, a pair of wedges are placed 120 degrees against each other tangentially on the shaft circumference..
Dimensions available
Width w
8 — 50 mm
Height h
4 — 18 mm
Length l
20 — 400 mm
Customer dimensions available on agreement.
![](https://www.crummenerl-gmbh.de/wp-content/uploads/2020/06/Crummenerl_f-keilverbindungen1-engl.png)
The advantages of this type of connection are the more uniform distribution of forces over the entire area, the reduced wear and tear as several lateral surfaces are simultaneously load-bearing, and the transmission of higher and variable torques.
Disadvantages: considerably more expensive, more marked weakening of shaft and hub, and high notch effect.
There are different types of wedge, which differ in shape and profile (see picture below). The different types of wedge are set by DIN 6881 (saddle keys), DIN6883 (flat keys), DIN 6886, DIN 6884 (flat gib keys), DIN 6889 (gib-head saddle keys).
Flat keys (DIN 6883 and 6884) have only very low form-locking but are characterised by a significantly lower notch effect than slot wedges.
Saddle keys (DIN 6881 and 6889) are rounded on the lower surface so that they fit directly on the shaft diameter (transmission of force therefore by friction locking).
Tangential keys (DIN 268 and 271) are suitable for high and variable torques. They are also used for split hubs (e.g. for flywheels). In this case, a pair of wedges are placed 120 degrees against each other tangentially on the shaft circumference..
Contact
Contact form
Contact details
Bannewerthstr. 18
58840 Plettenberg
Germany
Crummenerl GmbH (goods receiving / goods issue / truck access)
Bannewerthstr. 24c
58840 Plettenberg
Germany
Phone: +49 2391 91796–0
Fax: +49 2391 91796–30
Mail: info@crummenerl-gmbh.de
Web: www.crummenerl-gmbh.de
![index-2](https://www.crummenerl-gmbh.de/wp-content/uploads/2019/11/index-2.jpg)
Contact details
Crummenerl GmbH (Office)
Bannewerthstr. 18
58840 Plettenberg
Germany
Crummenerl GmbH (goods receiving / goods issue / truck access)
Bannewerthstr. 24c
58840 Plettenberg
Germany
Phone: +49 2391 91796–0
Fax: +49 2391 91796–30
Mail: info@crummenerl-gmbh.de
Web: www.crummenerl-gmbh.de
Contact form
![](https://www.crummenerl-gmbh.de/wp-content/uploads/2019/11/Crummenerl_Passfedern_1.jpg)
![](https://www.crummenerl-gmbh.de/wp-content/uploads/2019/11/Crummenerl_Passfedern_2.jpg)
![](https://www.crummenerl-gmbh.de/wp-content/uploads/2019/11/Crummenerl_Passfedern_4.jpg)
![](https://www.crummenerl-gmbh.de/wp-content/uploads/2019/11/Crummenerl_Passfedern_3.jpg)